public static LogSingleton log()
{
if (instance == null)
{
/**
* The client who has s_lock will proceed this condition.
*/
lock (s_lock)
{
/**
* I will assign the singleton instance if instance is null.
* otherwise will return directly.
*/
if (instance == null)
{
instance = new LogSingleton();
}
}
}
return(instance);
}
static void Main(string[] args)
{
var client = LogSingleton.log(); // this is the singleton instance.
Console.WriteLine(client.debugLog());
}
